68194624 has 28 divisors (see below), whose sum is σ = 135637524. Its totient is φ = 34018304.

The previous prime is 68194601. The next prime is 68194649. The reversal of 68194624 is 42649186.

It can be written as a sum of positive squares in 2 ways, for example, as 31809600 + 36385024 = 5640^2 + 6032^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34692 + ... + 36604.

Almost surely, 2^68194624 is an apocalyptic number.

68194624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68194624 is a deficient number, since it is larger than the sum of its proper divisors (67442900).

68194624 is a wasteful number, since it uses less digits than its factorization.

68194624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 2472 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 68194624 is about 8258.0036328401. The cubic root of 68194624 is about 408.5545451760.

The spelling of 68194624 in words is "sixty-eight million, one hundred ninety-four thousand, six hundred twenty-four".